We said it once, and we’ll say it again: adult acne is nothing to be ashamed of. Much like psoriasis and eczema, it is a disorder requiring time, patience, and a whole lot of trial-and-error to treat. Bearing this in mind, it stands to reason that products designed specifically for acne-prone skin are your best bet. Serums, in particular, are what you should reach for in the fight against breakouts and bumps, with potent types penetrating the skin easily to deliver skin-nourishing ingredients in a flash. Our curation of the best of the lot, below.